A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated formation between thorium, Eriochrome cyanine R and Brij-35 at pH = 4 media. The complex was floated in the interface of t …Web
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Based on this phenomenon and applying the solvent floatation of technique with 5.0 mL of benzene, the sensitivity of this method is remarkably enhanced, ε365=3.0×105 L•mol-1•cm-1. In the application of this method to the determination of SO32- in vegetables and wine samples, RSD ≪4.3% (n-5), and recoveries found by standard addition ...Web
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The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low …Web
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A new spectrophotometric method for the determination of Pd? in the system of Pd?-2-mercapto-β-naphthalenethiazole(MNT) by floatation with N_2-methylbenzene was established.In the H_2SO_4 medium,Pd with MNT forms a red complex with the molar ratio of 1∶2.The apparent molar absorptivity of the complex at 440 nm is 1.4×10~5 L·mol~ …Web
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Spectrophotometry is a measurement of how much a chemical substance absorbs or transmits. Spectrophotometry is widely used for quantitative analysis in various areas (e.g., chemistry, physics, biology, biochemistry, material and chemical engineering, clinical applications, industrial applications, etc). Any application that deals with chemical ...Web
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Download Citation | Spectrophotometric determination of palladium with 2-mercapto-β- naphthalenethiazole by methylbenzene floatation | A new spectrophotometric method for the determination of Pd ...Web
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Analytica Chimica Acta, 176 (1985) 185-191 Elsevier Science Publishers B.V., Amsterdam - Printed in The Netherlands SENSITIVE FLOTATION-SPECTROPHOTOMETRIC DETERMINATION OF GOLD BASED ON THE GOLD(III)/BROMIDE/RHODAMINE 6G SYSTEM Z. MARCZENKO* and K. JANKOWSKI …Web
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A spectrophotometric method for the determination of some tetracyclines is described. The suggested method is based on the reaction of the drug with sodium tungstate at pH 6 to form a yellow ...Web
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In this paper,the hydrophobic complex composed of Al(III) and TC was floated into organic phase under the optimal conditions: pH=6.2, the floatation equipment is home-made, The n-propyl alcohol is ...Web
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A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated formation between thorium, Eriochrome cyanine R and Brij-35 at pH = 4 media. The complex was floated in the interface of the aqueous phase and n-hexane by …Web
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Discusses advancements and innovations in water flotation processes for wastewater treatment. Provides information on the fundamentals of chemical coagulation and precipitation. Covers the operation and performance of system processes for water purification. Part of the book series: Handbook of Environmental Engineering (HEE, …Web
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3-aminomethylalizarn-N-N diacetic acid chromogenic dye (AMADA) was used for the first time in uranium and thorium spectrophotometric estimation with accurate and sensitive result, their complexes having a maximum absorbance at 575 nm for U and at 510 nm for Th. This system allows uranium and thorium content to be calculated with a …Web
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spectrophotometric determination of low level of mercury in aquatic samples by a simple flotation method in which the anionic mercury iodide complex is strongly associated with ferroin as a cationic dye reagent. Experimental Materials and instrumentation All the reagents were analytical grade obtained from Merck, Germany.Web
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Spectrophotometric determination protocol. After 5 min, to ascertain that flotation is completed, a suitable volume of the scum layer was transferred to a 1-cm …Web
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Purpose This study aimed to develop a rapid spectrophotometric method for counting coccidian oocysts in broilers feces, based on a standard count method "Malassez cell". Methods Therefore, a raw suspension containing purified oocysts of Eimeria known to parasitize broiler chicken was used. Five concentrations of oocyst suspensions were …Web
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A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated formation between t...Web
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Europe PMC is an archive of life sciences journal literature. Search life-sciences literature (Over 39 million articles, preprints and more)Web
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On the was taken from the standard solution. other hand, methods for the separation and preconcentration of A vanadium(V) stock solution (1 × 10–2 mol L–1) was prepared metals by flotation, followed by their spectrophotometric by dissolving 0.117 g of NH4VO3 in 100 mL of DDW. determination, have increased in popularity in recent years.9 ...Web
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In the present study a new technique and simple floatation-spectrophotometric extraction method was developed to recovery of Cadmium from aqueous samples prior to determination by UV ...Web
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This paper applied ion floatation-spectrophotometric principle, using 1-(2-pyridylazo)-2-naphthol (PAN) as collector, and through controlling pH of the solution and determination wavelength ...Web
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An atomic absorption spectrometer has been adapted to measure the absorbance of solutions of flotation reagents (e.g. xanthate, mercaptobenzothiazole, …Web
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Spectrophotometric determination of flotation collectors and organic reagents in ore treatment process liquors and effluents with an atomic absorption …Web
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A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on …Web
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A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated formation between thorium, Eriochrome cyanine R and Brij-35 at pH = …Web
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A highly selective and sensitive spectrophotometric procedure was proposed for the determination of microamounts of V(IV) as its floated complex. The …Web
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In a phosphate buffer medium of pH 7.0, free iodine liberated through the oxidation of I- by IO3-, reacts with excess I- to form a binary complex of I3-, which reacts further with CTMAB to form a ternary ion association complex of CTMA+•I3-.Web
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the spectrophotometric determination of t hese . surfactants, synthetic an ionic surfactants are . ... air floatation method was used for the determination. of anionic surfactants. In this study ...Web
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A low-cost and environmentally-friendly spectrophotometric method for hydrogen peroxide (H 2 O 2) determination based on the oxidative coloration reaction of N,N′-diethyl-p-phenylenediamine (DPD) via the Fenton reactions in aqueous water was established.The generated pink radical cation (DPD +) showed maximum absorption at …Web
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Flotation-Spectrophotometric Determination of Trace Amounts of Thorium N. Pourreza,* H. Parham and P. Mirzavand Department of Chemistry, Faculty of Sciences, Shahid Chamran University of Ahvaz, Iran A simple, sensitive and reproducible flotation-spectrophotometric method for the determination of thorium is reported. The method …Web
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Summary. Spectrophotometry is a quantitative measurement technique that allows scientists to investigate the optical properties of materials over a wide wavelength range, from the ultraviolet to the visible and infrared spectral regions. It involves the measuring the ratio of two radiometric quantities as a function of wavelength.Web
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AML alone has been estimated by spectrophotometric, [9, 10] fluorometric, reverse-phase high-performance liquid chromatography (RP ... showed complete overlap, which hindered the direct determination of these two analytes without prior separation. In such cases, the transformation of the UV absorption spectra into ratios and/or derivative …Web
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Floatation-Spectrophotometric Determination of Thorium, Using Complex Formation with Eriochrome Cyanine R. Previous. NEXT ARTICLE. Low Level Determinations of Methyl Methanesulfonate and …Web
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Ion flotation followed by a spectrophotometric determination of sulfide ion in water is reported. It is based on the formation of methylene blue from sulfide ion through the reaction with N,N-dimethylp-phenylenediamine in the presence of ferric ion, and on the flotation of methylene blue by using an anionic surfactant, sodium lauryl sulfate. Influences of …Web
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This paper describes a simple and highly selective method for the separation, preconcentration and spectrophotometric determination of extremely low concentration of mercury. The method is based on the flotation of an ion-associate of HgI 4 2− and ferroin between aqueous and n -heptane interface at pH 5.Web
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Floatation-spectrophotometric Determination of Thorium, Using complex Formation with eriochrome cyanine R Sabah Shiri 1, Ali Delpisheh 2, Ali haeri 3, Abdolhossein Poornajaf 2, Tahereh Khezeli ...Web
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